Update K8S to include an auto generator of values template

opencloud/charts/prometheus/templates/_helpers.tpl

@@ -0,0 +1,180 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "prometheus.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Return the port for prometheus.
+*/}}
+{{- define "prometheus.port" -}}
+9090
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "prometheus.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create labels for prometheus
+*/}}
+{{- define "prometheus.common.matchLabels" -}}
+app.kubernetes.io/name: {{ include "prometheus.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}
+
+{{/*
+Create unified labels for prometheus components
+*/}}
+{{- define "prometheus.common.metaLabels" -}}
+app.kubernetes.io/version: {{ .Chart.AppVersion }}
+helm.sh/chart: {{ include "prometheus.chart" . }}
+app.kubernetes.io/part-of: {{ include "prometheus.name" . }}
+{{- with .Values.commonMetaLabels}}
+{{ toYaml . }}
+{{- end }}
+{{- end -}}
+
+{{- define "prometheus.server.labels" -}}
+{{ include "prometheus.server.matchLabels" . }}
+{{ include "prometheus.common.metaLabels" . }}
+{{- end -}}
+
+{{- define "prometheus.server.matchLabels" -}}
+app.kubernetes.io/component: {{ .Values.server.name }}
+{{ include "prometheus.common.matchLabels" . }}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "prometheus.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create a fully qualified ClusterRole name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "prometheus.clusterRoleName" -}}
+{{- if .Values.server.clusterRoleNameOverride -}}
+{{ .Values.server.clusterRoleNameOverride | trunc 63 | trimSuffix "-" }}
+{{- else -}}
+{{ include "prometheus.server.fullname" . }}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create a fully qualified alertmanager name for communicating and check to ensure that `alertmanager` exists before trying to use it with the user via NOTES.txt
+*/}}
+{{- define "prometheus.alertmanager.fullname" -}}
+{{- if .Subcharts.alertmanager -}}
+{{- template "alertmanager.fullname" .Subcharts.alertmanager -}}
+{{- else -}}
+{{- "alertmanager not found" -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create a fully qualified Prometheus server name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "prometheus.server.fullname" -}}
+{{- if .Values.server.fullnameOverride -}}
+{{- .Values.server.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- printf "%s-%s" .Release.Name .Values.server.name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s-%s" .Release.Name $name .Values.server.name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Get KubeVersion removing pre-release information.
+*/}}
+{{- define "prometheus.kubeVersion" -}}
+  {{- default .Capabilities.KubeVersion.Version (regexFind "v[0-9]+\\.[0-9]+\\.[0-9]+" .Capabilities.KubeVersion.Version) -}}
+{{- end -}}
+
+{{/*
+Return the appropriate apiVersion for networkpolicy.
+*/}}
+{{- define "prometheus.networkPolicy.apiVersion" -}}
+{{- print "networking.k8s.io/v1" -}}
+{{- end -}}
+
+{{/*
+Create the name of the service account to use for the server component
+*/}}
+{{- define "prometheus.serviceAccountName.server" -}}
+{{- if .Values.serviceAccounts.server.create -}}
+    {{ default (include "prometheus.server.fullname" .) .Values.serviceAccounts.server.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccounts.server.name }}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Define the prometheus.namespace template if set with forceNamespace or .Release.Namespace is set
+*/}}
+{{- define "prometheus.namespace" -}}
+  {{- default .Release.Namespace .Values.forceNamespace -}}
+{{- end }}
+
+{{/*
+Define template prometheus.namespaces producing a list of namespaces to monitor
+*/}}
+{{- define "prometheus.namespaces" -}}
+{{- $namespaces := list }}
+{{- if and .Values.rbac.create .Values.server.useExistingClusterRoleName }}
+  {{- if .Values.server.namespaces -}}
+    {{- range $ns := join "," .Values.server.namespaces | split "," }}
+      {{- $namespaces = append $namespaces (tpl $ns $) }}
+    {{- end -}}
+  {{- end -}}
+  {{- if .Values.server.releaseNamespace -}}
+    {{- $namespaces = append $namespaces (include "prometheus.namespace" .) }}
+  {{- end -}}
+{{- end -}}
+{{ mustToJson $namespaces }}
+{{- end -}}
+
+{{/*
+Define prometheus.server.remoteWrite producing a list of remoteWrite configurations with URL templating
+*/}}
+{{- define "prometheus.server.remoteWrite" -}}
+{{- $remoteWrites := list }}
+{{- range $remoteWrite := .Values.server.remoteWrite }}
+  {{- $remoteWrites = tpl $remoteWrite.url $ | set $remoteWrite "url" | append $remoteWrites }}
+{{- end -}}
+{{ toYaml $remoteWrites }}
+{{- end -}}
+
+{{/*
+Define prometheus.server.remoteRead producing a list of remoteRead configurations with URL templating
+*/}}
+{{- define "prometheus.server.remoteRead" -}}
+{{- $remoteReads := list }}
+{{- range $remoteRead := .Values.server.remoteRead }}
+  {{- $remoteReads = tpl $remoteRead.url $ | set $remoteRead "url" | append $remoteReads }}
+{{- end -}}
+{{ toYaml $remoteReads }}
+{{- end -}}